Adjustable sash lock



- H. E. CAMPBELL ADJUSTABLE SASH LOCK Filed June 6, 1925 ATTORNES Patented Sept. 1, 1925.

UNITED STATES HARRY E. CAMPBELL, OF BALTIMORE, MARYLAND.

ADJUSTABLE SASH LOCK.

Application filed June 6, 1925. Serial No. 35,304.

To all whom it may concern:

Be it known that I, HARRY E. CAMPBELL, a citizen of the United States, and a resident of Baltimore, Maryland, have invented certain new and useful Improvements in Adjustable Sash Locks, of which the following is a specification.

The present invention relates to an adjustable strike plate for window sashes. This invention is particularly applicable to metal sashes in which the meeting rails are made of single bent plates of heavy stock which interlock with each other.

In the manufacture of metal windows, it obviously is not possible to trim the sashes to fit the frames and as the upward movement of the upper sash and the downward movement of the lower sash is limited, it is desirable to have some flexibility in fit at the meeting rail. This may be provided by the use of a bent piece of zinc as is described in detail in my copending applicaton, Ser. No. 691,890. WVhen such an arrangement is provided, it is necessary that an adjustment be provided for the lock, and in the present application I show a simple and eiiicient form of making such adjustment.

In the accompanying drawings, Fig. 1 is a section through a meeting rail of a window such as is shown in my said co-pending application with a lock embodying my present invention attached thereto; Fig. 2 is a sectional view of the meeting rail of the upper sash taken on line 22 of Fig. 1; Fig. 3 is a sectional view taken on line 3-3 of Fig. 1. 2

Referring to Fig. 1, 10 is the meeting rail of the lower sash which is provided with a bent zinc strip 11 and carries the usual lock member 12; 13 is the meeting rail of the upper sash having a flat horizontal portion 14 and a flange 15 which engages with the zinc strip 11. A base is attached to the meeting rail 13 by means of screws 21 which pass downward through the horizontal portion 14. These screws may be provided with nuts, or as here shown, they may enter a pull handle 22. The base 20 has two upwardly extending members 24, the rear faces of which lie against the inner face of the main vertical portion of meeting rail 13. As shown in Figs. 2 and 3, the vertical portions 24; have serrated faces 26, which faces are beveled so that they diverge toward the vertical portion of meeting rail 13.

The strike plate proper is designated by the numeral and has two downwardly extending legs 32 each provided with a serrated face 33, the serrations of which are adapted to engage the serrations of faces 26. The strike plate 30 has a downwardly projecting member 31 adapted to cooperate with the lock 12 as shown in Fig. 1.

When the parts are assembled as shown in the drawings, strike plate 30 will be held firmly in place between the beveled faces 26 and the main vertical portion of meeting rail 13. However, the position of strike plate 30 can readily be adjusted by taking out the screws 21, which will permit the strike plate to be moved so' that it will engage the serrations of faces 26 in a different position.

After the Window is assembled in place,

the lock member 12 is attached to meeting rail 10 and the window is closed tight shut. Member 30 is then placed in any given position in relation to the faces 26 and stood in its final position. If strike plate 30 is too high, the operator simply engages a lower setof notches, whereas, if it is too 1ow,'he raises strike plate 30 until it is in such position that the lock will operate to hold the window tightly shut. The base is then secured in place by the screws 21.

What I claim is:

1. A strike plate for window sash locks, comprising a base having a pair of serrated diverging faces, a lock engaging member adjustable in relation to said base having a pair of serrated converging faces, and means for attaching said base to a meeting rail in such a way that said serrated faces of said base and said lock engaging member will be held pressed together.

2. A device as characterized in claim 1, in which the means for attaching the base comprises two screws whose axes are substantially arallel to the main face of said lock engaging member.

HARRY E. CAMPBELL. 

